Get rid of some unnecessary casts

PBCLIProxy.mm

@@ -53,11 +53,11 @@ - (BOOL)openRepository:(NSURL*)repositoryPath arguments: (NSArray*) args error:(
 
 	if ([arguments count] > 0 && ([[arguments objectAtIndex:0] isEqualToString:@"--commit"] ||
 		[[arguments objectAtIndex:0] isEqualToString:@"-c"]))
-		[((PBGitWindowController *)document.windowController) showCommitView:self];
+		[document.windowController showCommitView:self];
 	else {
 		PBGitRevSpecifier* rev = [[PBGitRevSpecifier alloc] initWithParameters:arguments];
 		document.currentBranch = [document addBranch: rev];
-		[(PBGitWindowController *)document.windowController showHistoryView:self];
+		[document.windowController showHistoryView:self];
 	}
 	[NSApp activateIgnoringOtherApps:YES];
 

PBCommitList.h

@@ -10,9 +10,11 @@
 #import <WebKit/WebView.h>
 #import "PBGitHistoryController.h"
 
+@class PBWebHistoryController;
+
 @interface PBCommitList : NSTableView {
 	IBOutlet WebView* webView;
-	IBOutlet id webController;
+	IBOutlet PBWebHistoryController *webController;
 	IBOutlet PBGitHistoryController *controller;
 
 	NSPoint mouseDownPoint;

PBCommitList.m

@@ -30,7 +30,7 @@ - (void) keyDown: (id) event
 			[webView scrollPageDown: self];
 	}
 	else if ([character rangeOfCharacterFromSet:[NSCharacterSet characterSetWithCharactersInString:@"jkcv"]].location == 0)
-		[((PBWebHistoryController *)webController) sendKey: character];
+		[webController sendKey: character];
 	else
 		[super keyDown: event];
 }

PBFileChangesTableView.m

@@ -15,7 +15,7 @@ @implementation PBFileChangesTableView
 - (NSMenu *)menuForEvent:(NSEvent *)theEvent
 {
 	if ([self delegate])
-		return [(PBGitIndexController *)[self delegate] menuForTable: self];
+		return [[self delegate] menuForTable: self];
 
 	return nil;
 }

PBGitCommitController.h

@@ -9,7 +9,9 @@
 #import <Cocoa/Cocoa.h>
 #import "PBViewController.h"
 
+@class PBGitIndexController;
 @class PBIconAndTextCell;
+@class PBWebChangesController;
 
 @interface PBGitCommitController : PBViewController {
 	NSMutableArray *files;
@@ -18,8 +20,8 @@
 	IBOutlet NSArrayController *unstagedFilesController;
 	IBOutlet NSArrayController *cachedFilesController;
 
-	IBOutlet id indexController;
-	IBOutlet id webController;
+	IBOutlet PBGitIndexController *indexController;
+	IBOutlet PBWebChangesController *webController;
 
 	NSString *status;
 

PBGitCommitController.m

@@ -34,7 +34,7 @@ - (void)awakeFromNib
 }
 - (void) removeView
 {
-	[(PBWebChangesController *)webController closeView];
+	[webController closeView];
 	[super finalize];
 }
 
@@ -325,8 +325,8 @@ - (IBAction) commit:(id) sender
 	if (ret)
 		return [self commitFailedBecause:@"Could not update HEAD"];
 
-	[(PBWebChangesController *)webController setStateMessage:[NSString stringWithFormat:@"Successfully created commit %@", commit]];
-	
+	[webController setStateMessage:[NSString stringWithFormat:@"Successfully created commit %@", commit]];
+
 	repository.hasChanged = YES;
 	self.busy--;
 	[commitMessageView setString:@""];

PBGitRepository.h

@@ -13,6 +13,8 @@
 
 extern NSString* PBGitRepositoryErrorDomain;
 
+@class PBGitWindowController;
+
 @interface PBGitRepository : NSDocument {
 	PBGitRevList* revisionList;
 	PBGitConfig *config;
@@ -58,7 +60,7 @@ extern NSString* PBGitRepositoryErrorDomain;
 - (void) setup;
 
 @property (assign) BOOL hasChanged;
-@property (readonly) NSWindowController *windowController;
+@property (readonly) PBGitWindowController *windowController;
 @property (readonly) PBGitConfig *config;
 @property (retain) PBGitRevList* revisionList;
 @property (assign) NSMutableArray* branches;

PBGitRepository.m

@@ -174,7 +174,7 @@ - (void)makeWindowControllers
 #endif
 }
 
-- (NSWindowController *)windowController
+- (PBGitWindowController *)windowController
 {
 	if ([[self windowControllers] count] == 0)
 		return NULL;